Filter for an aerosol generating article, aerosol generating article comprising such a filter and associated manufacturing method

The filter design with a combination density of 0.15 mg/mm³ and crimping depth of 0.2-1.5 mm addresses firmness and pressure drop issues, enhancing user experience and reducing manufacturing defects in aerosol generating articles.

WO2025252821A1PCT designated stage Publication Date: 2025-12-11JT INTERNATIONAL SA
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Patent Information

Application Number
PCT/EP2025/065524
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2024-06-05
Filing Date
2025-06-04
Publication Date
2025-12-11

AI Technical Summary

Technical Problem

Existing aerosol generating filters face challenges in achieving optimal firmness while maintaining a desired pressure drop, leading to potential product jams and consumer dissatisfaction, especially when using nonwoven materials with natural fibers.

Method used

A filter design with a combination density of at least 0.15 mg/mm³, achieved by crimping the filter sheet with a depth between 0.2 mm and 1.5 mm, and using a filter wrapper with specific basis weights, ensures sufficient firmness and low pressure drop.

Benefits of technology

The solution provides filters with enhanced firmness and acceptable pressure drop, improving the user experience and reducing manufacturing defects.

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    Figure EP2025065524_11122025_PF_FP_ABST
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Abstract

The present invention concerns a filter (30) for an aerosol generating article (10), comprising: - a filter sheet gathered to form a rod; - a filter wrapper (22) wrapping the filter sheet; wherein the filter sheet comprises natural fibers, wherein a filter combination density defined as a ratio between the sum of the filter sheet and filter wrapper weights and the filter volume is greater than or equal to 0.15 mg / mm3.
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Citation Information

Patent Citations

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  • A component for a delivery system and a method and apparatus for manufacturing a component for a delivery system

    WO2023126502A1

  • An aerosol generating article comprising impregnated charcoal paper filter and a flavoring capsule

    WO2023161411A1